Valve.



Patented Nov.. 5, IBM. .1. w. NETHEBY.

VALVE.

(Application filed May 31, 1901.)

(No Model.)

UNITED STATES PATENT @EEICE.

JO EPH w. NETI-IERY, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE NETHERYHYDRAULIC VALVE COMPA Y, OF INDIANAPOLIS, INDI- ANA; NEW YOEI N. Y., ANDJERSEY CITY, NEW JERSEY, A OORPO:

RATION OF NEW JERSEY.

VALVE.

SPECIFICATION forming part of Letters Patent- No. 685,930, datedNovember 5, 1901.

' Application filed May 31,1901. Serial No. 62,595. No modeLl To allwhom it mag concern:

Be it known that I, JosEPI-i W. NETHERY, a citizenof the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Valves, of whichthe following is a specification.

My present invention relates to that class or variety of valves whereinthe main valve Opens automatically upon the opening of a small auxiliaryvalve and closes automatically in a certain period after the closing ofsaid auxiliary valve and wherein the small auxiliary valve is closed bythe opening of the main valve, the valve thus being selfcontrolling inits operation after the auxiliary valve is once opened.

Said invention consists in an improved means whereby the abovestatedresults are accomplished.

Referring to the accompanying drawings, which are made a part hereof andon Whichsimilar reference characters indicate similar parts, Figure 1 isa side elevation of a valve of the kind mentioned with fragments of theinlet and outlet pipes thereto; Fig. 2, a central vertical sectionalview of the same as seen when looking upwardly from the dotted line 2 2in Figs. 3 and 4; and Figs. 3 and 4 horizontal sectional views as seenwhen looking downwardly from the dotted lines 3 3 and 4 4, respectively,in Figs. 1 and 2.

In the valve of my present invention the fluid enters the main chamberin the valvebody 10 through the ingress-pipe 11 and is dischargedthrough the egress-pipe l2. ingress-pipe 11 is shown as connected to theside of the valve-body instead of, as is usual, to its end, while theegress-pipe 12 is at the end in the place usually occupied by theingresspipe. The main chamber within the body 10 is cylindrical in formfor the greater portion of its length, as shown, but at its lower end isconstricted and terminates in the valve-seat 13, upon which the mainvalve 14 rests when the valve is closed, as shown in Fig. 2. Thevalve-stem l5 continues up to a point in the chamber above theingress-opening and has a piston-head 16 thereon which The issubstantially the full of said cylindrical chamber, but fits somewhatloosely therein, for the purpose which will be prosfrom just above thevalve-seat up a distance at least equal to the travel of the valve inoperation. the chamber between these wings taper out- Ward graduallyuntil'the full size of the chamber is reached, so that the efiectiveopening for the flow of fluid as the main valve is opened in operationgraduallyenlarges until the largest size is reached instead of openingsuddenly to its full capacity. The upper end of the cylinder is closedby means of a suitable head 18, which is shown as held in place by theflanged coupling 19. In the under side of the head 18 is the valve-seatfor the small auxiliary valve 20, whose stem 21 extends up through saidhead to the outside, where it terminates in a push-button 22. Astuffingbox may or may not be provided in the knob 23; but in my presentconstruction, for reasons which will be presently given, this is in mostcases unnecessary.

Extending from the auxiliary-valve seat As will be observed, the sidesof.

around to below the main-valve seat is the by-pass 24. As best shown inFigs. 3 and 4,

this b ass is of lar er cross-sectional area than the opening which theauxiliary valve 20 is designed to close, and consequently when the valve20 is opened the fluid which thereupon passes out of the main chamberflows easily and under no pressure as soon as it reaches said by-pass,and therefore a stuifingbox for the valve-stem 21 is unnecessary, as thefluid has no tendency to press out of the inclosure up around said stem.

In operation my improved valve works in the following manner: Theoperator presses upon the button 22, forcing the valve 20 off its seat.'The fluid in the upper portion of the main chamber, above thepiston-head 16, being thereupon released from confinement, the pressurecoming in from the ingress-pipe 11, acting on the under side of saidpiston head 16, (which is of greater area than the upper side of themain valve 14,) will raise said piston and said main valve, the fluidabove the piston-head flowing out into the by-pass 20, and thencedischarging into the main egress-opening leading from the main valve, aswill be readily understood. As the piston-head rises it soon comes incontact with and pushes up the auxiliaryvalve 20, which is thuspresently seated. As before stated, the piston -head 16 fits somewhatloosely in the cylindrical portion of the main chamber, so that a smallquantity of the fluid under the pressure which exists will find its wayto above said piston-head, so that presently there comes to be an equalpressure upon both sides of said head. Thereupon the main-valvestructure, including the pistonhead, begins to descend both by reason ofgravity and because of the pressure on the upper side of the main valve14. This descent, however, is gradual, as it can take place no fasterthan is permitted by the slow passage of fluid to above the piston-headthrough the small opening provided.

The piston-head may come directly against to provide an adj ustablestrike 25, which may be in the form of a screw inserted in a screwthreaded perforation which extends down through the piston-head l6 andinto the valve 15, as shown in Fig. 2, and which is thus adjustable. Byadjusting this strike, as will be readily seen, I am able to close theauxiliary valve 20 at any predetermined point in the ascent of themain-valve structure.

One noticeable advantage incident to the construction employed in thevalve embodying my present invention is that no packing of anykind isnecessary at any point. Neither arethere any springs or small andintricate parts to get out of order. The valve structures are wholly ofmetal and are of a solid and substantial construction, are of greatsimplicity, and therefore inexpensive, although very durable andelficient.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-- '1. A valve comprising acylindrical body the lower end of which converges to a valveseat ofsmaller diameter, and which is provided with a head containing avalve-seat for a small auxiliary valve, a valve structure comprising avalve-stem having the main valve upon one end thereof and of a largerdiameter than said stem, and a piston-head of larger diameter than saidmain valve adapted to operate within the cylindrical chamber upon theother end, an ingress-opening leading to within said cylindrical chamberbelow the piston-head and above the main valve, an egress openingleading off from below the main valve, a by-pass leading from the smallauxiliary-valve seat to and discharging into said egress-opening, and anauxiliary valve adapted to be pushed away from its seat by means of itsstem from the outside and to be engaged and pushed toward and againstits seat from the inside by the mainvalve structure as it rises,substantially as set forth.

2. The combination, in a valve, of the body 10 having an ingress-openingat one side and an egress-opening at one end leading to and from asubstantially cylindrical chamber within said body, said chamber howeverconverging at one end toward the main-valve seat and providedwithguide-wings extending above said seat for guiding the main valve inits movement, said main valve having a stem which extends to a pointabove the ingress-opening where a piston-head of substantially thediameter of the main cham ber is provided, a by-pass leading from belowthe main valve up around the same into the head of the cylinder andterminating in a valve-seat,and a small auxiliary valve mounted in saidhead and adapted when closed-to rest against said valve-seat,substantially as set forth. the auxiliary valve, if desired; but Iprefer 3. The combination of a valve-body containing a single largecylindrical chamber pro vided with a main-valve seat at one end and Lasmall valve-seat at the other end, a combined main-valve-and-pistonstructure presenting differential pressure areas to the fluid situatedwithin said chamber, the piston being arranged on one side of thefluidjinlet and the valve on the other side, a by- 1 pass leading fromthe small valve-seat around 'to below the main-valve seat, andastarting- Jvalve at said small valve-seat, adapted to be closed bycontact with the main valve-andpiston structure as it opens.

4;. The combination, in an automatic valve, of the valve-body comprisinga cylindrical Ichamber with a small valve-seat at one end and amain-valve seat at the other end and a fluid-inlet between them and afluid-outlet below said main-valve seat, a combined valveand pistonstructure mounted therein the piston above and the valve below thefluidinlet, the piston being formed to permit the passage of fluid fromone side to the other JOSEPH W. NETHERY.

Witnesses:

CHESTER BRADFORD, L. II. OoLvIN.

